per·ma·cul·ture

[pur-muh-kuhl-cher]
noun
a system of cultivation intended to maintain permanent agriculture or horticulture by relying on renewable resources and a self-sustaining ecosystem.

per·ma·cul·tur·ist, per·ma·cul·tur·al·ist, noun
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World English Dictionary
permaculture (ˈpɜːməˌkʌltʃə) [Click for IPA pronunciation guide]
 
n
the practice of producing food, energy, etc, using ways that do not deplete the earth's natural resources
 
[C20: coined by Bill Mollison (born 1928), Australian ecologist, from perma(nent agri)culture]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Permaculture is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a fool or simpleton; ninny.
Dictionary.com's 21st Century Lexicon
Main Entry:  permaculture
Part of Speech:  n.
Definition:  See permacultural
Dictionary.com's 21st Century Lexicon
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Example sentences
They also span the agricultural spectrum, from permaculture to potatoes and
  clover to community-supported agriculture.
In fact some of the species promoted by permaculture can be serious
  environmental weeds.
Permaculture, local farming and local organic farming is the way to solve all
  our food problems and uses less petrol to do so.
The eco-ideology known as permaculture has entered the mainstream.
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